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Protective effect of exogenous matrix metalloproteinase-9 on chronic renal failure
Lei Wang1, Jue Wang1, Yong Wang2
1Department of Urologic Surgery, Institute of Infectious Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, P.R. China.
Abstract:
Matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) have pivotal functions in extracellular matrix turnover and are involved in chronic kidney diseases. However, the exact functions of MMPs in chronic renal failure (CRF) have yet to be demonstrated. The aim of the present study was to examine the effects of MMP-9 on CRF. An adenine-induced model of CRF was generated in rabbits. Following the injection of MMP-9 into the renal arteries of the rabbits, significant improvements in renal morphology and serum levels of creatinine and urea nitrogen were observed. Furthermore, MMP-9 administration was shown to decrease the serum TIMP-1 concentration and upregulate renal MMP-9 expression. These results demonstrate a directly protective role for MMP-9 in CRF.
Insights
Matrix metalloproteinase-9 (MMP-9) shows a protective effect in chronic renal failure (CRF). Administering MMP-9 improved kidney structure and function in an adenine-induced CRF rabbit model.
Area of Science:
- Nephrology
- Biochemistry
- Extracellular Matrix Biology
Background:
- Matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) regulate extracellular matrix turnover.
- Their roles in chronic kidney diseases (CKD), particularly chronic renal failure (CRF), require further elucidation.
- The specific function of MMPs in the context of CRF remains largely undetermined.
Purpose of the Study:
- To investigate the therapeutic effects of matrix metalloproteinase-9 (MMP-9) in a rabbit model of chronic renal failure (CRF).
- To assess the impact of MMP-9 administration on renal morphology and key biochemical markers of kidney function.
Main Methods:
- Chronic renal failure (CRF) was induced in rabbits using adenine.
- Matrix metalloproteinase-9 (MMP-9) was administered directly into the renal arteries of the CRF rabbits.
- Renal morphology, serum creatinine, serum urea nitrogen, and serum TIMP-1 concentrations were analyzed.
- Renal MMP-9 expression levels were also evaluated.
Main Results:
- MMP-9 administration led to significant improvements in renal morphology in the CRF rabbits.
- Serum levels of creatinine and urea nitrogen were notably decreased following MMP-9 treatment.
- A reduction in serum TIMP-1 concentration was observed.
- Upregulation of renal MMP-9 expression was detected post-administration.
Conclusions:
- Matrix metalloproteinase-9 (MMP-9) demonstrates a directly protective role in mitigating chronic renal failure (CRF).
- MMP-9 therapy offers potential as a novel treatment strategy for kidney disease.
- The study highlights the therapeutic potential of modulating MMPs in renal pathology.
